Someone looking to buy twin mattress sets will likely head for the nearest mattress store. That's probably the best way to find a twin mattress for sale, but there's other things to be considered too. For instance, if someone is looking for a specific brand like Stern and Foster, then there are specific stores selling those. Moreover, buying online will likely be the best way to buy a cheap twin mattress. Read this article to learn where to buy twin mattress sets.